Title :
Blocking artifact free inverse discrete cosine transform
Author :
Yang, Seungjoon ; Kittitornkun, Surin ; Hu, Yu-Hen ; Nguyen, Truong Q. ; Tull, D.L.
Author_Institution :
Dept. of Electr. & Comput. Eng., Wisconsin Univ., Madison, WI, USA
Abstract :
This paper presents the generalized lapped biorthogonal transform embedded inverse discrete cosine transform (ge-IDCT) as an alternative to the IDCT. The ge-IDCT with nonlinear weighting in the embedded transform domain can reconstruct the signal with alleviated blockishness. Additional complexity, imposed by the replacement, is trivial thanks to an efficient lattice structure. The proposed ge-IDCT is applied in the JPEG still image compression standard to demonstrate its validity
Keywords :
data compression; discrete cosine transforms; image coding; image reconstruction; transform coding; JPEG still image compression standard; blocking artifact elimination; efficient lattice structure; embedded transform domain; ge-IDCT; generalized lapped biorthogonal transform; inverse discrete cosine transform; nonlinear weighting; signal reconstruction; Bit rate; Delay; Discrete cosine transforms; Discrete transforms; Filter bank; Image coding; Image reconstruction; Lattices; Matrix decomposition; Transform coding;
Conference_Titel :
Image Processing, 2000. Proceedings. 2000 International Conference on
Conference_Location :
Vancouver, BC
Print_ISBN :
0-7803-6297-7
DOI :
10.1109/ICIP.2000.899594
